Spray nozzle assembly



July 10, 1956 H. J. WILLIAMSON SPRAY NOZZLE ASSEMBLY 2 Sheets-Sheet 1Filed April 23, 1954 INVENTOR July 10, 1956 H. J. WILLIAMSON 2,754,151

SPRAY NOZZLE ASSEMBLY Filed April 23, 1954 2 Sheets-Sheet 2 1 4V/INVENTOR 19/5 ATTORNEY i III/11111111 nited States Patent SPRAY NOZZLEASSEMBLY Herbert Joseph Williamson, Burlingame, Calif. Application April23, 1954, Serial N 0. 425,256 Claims. (Cl. 299-39) This inventionrelates to a spray nozzle assembly and has for one of its objects theproduction of a simple and efficient nozzle for discharging foggedstreams of liquid from atomizing or fogging types of spray heads andintercepting these fogged liquid streams by relatively straight jettedstreams of liquid to produce a far-reaching effect upon the foggedstreams of liquid.

A further object of this invention is the production of a simple andeificient spray nozzle having spaced outwardly opening fog forming sprayheads, between which are located jet forming orifices or nozzles toproduce a venturi effect by intercepting fogged streams of liquid withrelatively straight jetted streams of liquid, the nozzle being mountedupon a substantially horizontal axis to facilitate the vertical rotationof the nozzle to an adjusted position and to thereby selectivelyregulate the direction of discharge of streams of fluid from the nozzle,such for instance, from a relatively vertical direction to a relativelylateral direction.

Other objects and advantages of the present invention will appearthroughout the following specification and claims.

In the drawings:

Figure l is a rear elevational view of the apparatus;

Figure 2 is a side elevational view thereof;

Figure 3 is a fragmentary top plan view of the apparatus;

Figure 4 is an enlarged vertical sectional view taken on line 44 ofFigure 1, the tank of the vehicle being shown in fragmentary elevation;

Figure 5 is a fragmentary side elevational view of the nozzle;

Figure 6 is a fragmentary vertical sectional view of one of thefog-forming spray heads, a portion of the nozzle pipe being shown insection;

Figure 7 is a fragmentary vertical sectional view of the nozzle pipe,illustrating one of the jet forming orifices;

Figure 8 is a rear elevational view of a modified form of nozzleelement.

This application is a continuation in part of my application filed March10, 1952, Serial Number 275,730, now abandoned, relating to Spray NozzleAssembly.

By referring to the drawings, it will be seen that 10 designates thevehicle which preferably comprises a tank 11 mounted upon wheels 12 tofacilitate transportation of the apparatus. A draft bar 13 is preferablycarried by the vehicle 10 for connection with a powered towingapparatus. A shaft 14 is carried by the vehicle for connection with apressure actuating and producing means of a conventional type tomaintain pressure upon the liquid within the tank 11.

The tank 11 is provided with an outlet or discharge element 15, whichpreferably extends vertically from the tank 11 near the rear endthereof. This discharge element is provided with a rearward andhorizontally extending neck 16 which constitutes a substantialhorizontalaxis for the nozzle element 17. This nozzle element 17comprises a substantially T-shaped union 18 which is threaded upon thehorizontally extending neck 16 and communicates with the hollowdischarge element 15 of the tank 11. The union 18 carries the laterallyextending arc-shaped nozzle pipes 19 and 20 which project upon oppositesides of the union 18. These pipes 19 and 20 are preferably archedupwardly, as shown in Figure 1. Lock nuts 22 and 23 are threaded uponthe neck 16 and are adapted to provide abutting friction gripping actionagainst the union 18 to lock the nozzle element 17 in a selectedadjusted position after the element 17 has been manually rotated uponits horizontal axis which is provided by the neck 16. In this way thenozzle element 17 may be firmly held in an adjusted position after beingmanually swung from the dotted position shown in Figure 1 to the fullline position in said figure. The nozzle element 17 may be manuallyrotated about its horizontal axis, the neck 16, to any desired orselected position, and may then be locked in this position by means ofthe lock nuts 22 and 23, or by means of any suitable or convenientlocking means within the spirit of the invention.

The pipes 19 and 20 of the nozzle element 17, each carry upwardly oroutwardly discharging protruding hollow outlet stems 24 and each stem 24carries a suitable fog-forming spray head 25. These stems 24 are spacedalong the length of the nozzle element 17, as shown and the heads 25 aresupported in outward spaced relation relative to the pipes 19 and 20 todischarge fogged streams of liquid at a spaced distance outwardly withrespect to the nozzle element 17. Each head 25 is provided with inturneddischarge or inwardly facing closely arranged openings 26 and 27, whichdischarge cross streams of liquid at angles of about 45, therebyproducing a foglike spray. Jet-forming orifices 28 which dischargefluids upwardly and outwardly are carried by each pipe 19 and 20, andeach orifice carries an outwardly perforated cap 29 for discharging astraight stream of liquid outwardly of the nozzle 17. These orifices 28are located intermediate the stems 24, and the caps 29 are carried closeto the pipes 19 and 20, whereas the heads 25 are located outwardlybeyond the caps 29. The discharge element 15 preferably carries acontrol valve 30 to cut off the supply of liquid through the element 15,from the tank 11 when the apparatus is not in use.

When the valve 30 is opened and the apparatus is operating, after thenozzle 17 has been adjusted and locked in a selected position, the fluidunder pressure from the tank 11 is discharged outwardly from the alignedfog-forming heads 25 in a fan-like formation at a spaced distance fromthe nozzle 17. Fluid under pressure is also discharged outwardly fromthe orifices 28 to produce a venturi effect, the straight jetted streamsof liquid from the orifices 28 intercepting the fogged streams of liquidin the manner shown in Figures 1 and 5, to define a far reachingagitated fog mass projected in a selected direction, and in a continuousbank throughout the length of the nozzle 17 in a substantially verticalplane in an upwardly and outwardly direction.

It will be noted that the fogged streams of liquid are dischargedoutwardly from the aligned spray heads 25, which heads 25 are spacedoutwardly from the nozzle element 17 so as to discharge radiating orsubstantially parallel fan-shaped streams of fog-like liquid outwardlybeyond the nozzle element 17. The aligned jet orifices 28 are located atspaced intervals between the stems 24 of the aligned fog-forming sprayheads 25 and are carried close to the nozzle element 17, as shown indetail in Figure 5. The jet orifices 28 discharge relatively fine jetstreams of liquid outwardly from a point inwardly of the location of thefog-forming spray heads 25 so that these jet streams intercept thejunction of the fanshaped fog-like streams of liquid discharged from the1C Patented July 10, 1956 heads 25 in the manner shown in Figure 5,thereby causing the edges of the fan-shaped streams to swirl inwardlytoward center of the fan-shaped streams in the manner also shown inFigure 5 and to propel and disseminate the fog-mass outwardly with addedimpetus. The nozzle element '17 as stated may be rotated on itshorizontal axis so as to direct the fog-mass in a direction from oneside of the vehicle it and upwardly as shown in Figure 1, so as to covertrees, bushes and other vegetation to be treated. The vehicle may passdown between a row of trees, bushes and other vegetation, and thefog-mass may be selectively directed to a desired area due to the factthat the hollow nozzle element 25 is rotatable on a horizontal axis andmay be vertically swung upon this axis to direct the fog-mass at adesired angle with respect to the vehicle 10. The outer ends of thepipes 19 and 20 are provided with clean-out caps, as shown.

As shown in Figure 8, the nozzle element may be of a straightconstruction as indicated at 17* within the spirit of the invention,although it is preferable .to construct the same on the arc of a circle,as shown in Figure 1. It should be fu-rtherunderstood that certaindetail changes may be made in the construction and arrangement of parts,so long as such changes fall within the scope of the appended claims.Any type of spraying liquid may be used within the spirit of theinvention.

Having described the invention, what is claimed as new is:

1. A device of the class described comprising a support, a hollow nozzleelement mounted for vertical rotation upon ,a substantially horizontalaxis upon said support, said element having laterally extending nozzlepipes, closely arranged upwardly and outwardly discharging inturnedfog-forming spray means carried by and communicating with said pipes andspaced outwardly of said pipes for discharging a plurality of tan-shapedstreams of liquid outwardly beyond said pipes, and upwardly andoutwardly discharging jet orifices carried by said nozzle element,adapted to discharge relatively narrow jetted streams of liquid lyingclose to said pipes and located intermediate the fog-forming spray meansand inset relative .to the location of said fog-forming spray means forintercepting .said fan-shaped streams of liquid at the point of junctionof said fan-shaped streams of liquid to co-mingle therewith and tofurther propel said liquid outwardly in a fog-like mass in a selecteddirection and to thereby discharge a substantially vertical .continuousbank of fog mass from said nozzle element throughout the length thereofin an upwardly and outwardly direction.

2. A device as defined in claim 1, wherein said hollow nozzle element ismounted upon a liquid containing body adapted to contain liquid underpressure, and wherein said horizontal axis constitutes a liquidcommunicating means between said nozzle and said liquid containing body.

3. A device as defined in claim 1, wherein said horizontal axiscomprises a horizontally extending hollow portion, a union carried bysaid nozzle element and rotatably mounting said nozzle element upon saidhollow portion to facilitate the rotation of said nozzle element in avertical plane upon said horizontally extending member to change thevertical angle or discharge from said nozzle element.

4. A device as defined in claim 3, with the addition that a lockingmeans is carried by said union and engages said support for locking saidnozzle element in a selected vertical angular position upon saidhorizontal axis.

5. A device of the class described comprising a body adapted to containliquid under pressure, a hollow nozzle element, having a hollow journaland laterally extending nozzle pipes extending therefrom, a nozzleelement supporting member carried by and communicating with said bodyand nozzle element, said supporting member having a horizontallyextending portion upon which said hollow journal of said nozzle elementis rotatably mounted, said nozzle element being adapted to be rotated ina vertical plane upon said hollow 'journal to direct discharge of liquidunder pressure from said nozzle element in a selected direction, aplurality of upwardly extending aligned fog-forming spray headssupported at spaced intervals upon said nozzle element and communicatingtherewith, said heads being spaced outwardly of said nozzle element,said nozzle element having a plurality of upwardly discharging alignedspaced orifices, one orifice being located between the respective sprayheads and lying close to said nozzle element in inset relation to saidheads, and said orifices being adapted to discharge straight jettedstreams of liquid outwardly to intercept the junction of fogged streamsof liquid discharged from said fog-forming spray heads and to therebydischarge a continuous bank of fog mass from said nozzle elementthroughout the length thereof.

References Cited in the file of this patent UNlTED STATES PATENTS558,940 Frey Apr. 28, 1896 804,807 Glore Nov. 14, 1905 1,663,263 SharpMar. 20, 1928 1,887,092 Glase NOV. 8, 1932

